Product Details  Available in many sizes, starting from car up to turck ones with reinforeced hole valve and top seamless construction.  ENVELOPES (CAR TIRE INNER TUBE) Inner and outer Envelopes for any precured tyre retreading system, manufactured in moulds shaped like new tyres and made of soft and heat resistant compound. Available in many sizes, starting from car up to turck ones with reinforeced hole valve and top seamless construction. - CURING TUBES High quality push in valve curing tubes manufactured over 20 sizes to be used for car, light van, truck tyres.- CURING BLADDERS Curing bladders made of special heat resistant compound, designed to be used in high technology curing presses. Available in several sizes and shapes for car, light van and truck tyres retreading. - Shih Fa Rubber Industries Co., Ltd. (S.F.R.) is a rubber industry it has an experience in making tyres & tubes field of nearly 30 years. S.F.R. also manufacturers and exports curing tubes, bladders and envelopes for retreading tyres at the same time. S.F.R. can co. ply with all demands coming from client's special request. Any inquires from client's are surely welcome.